Gate more of the external requires

Decreases memory usage slightly

Signed-off-by: Tim Smith <tsmith@chef.io>

27 files changed, 29 insertions, 29 deletions

diff --git a/lib/ohai/application.rb b/lib/ohai/application.rb
index cdbac369..49b7d5e9 100644
--- a/lib/ohai/application.rb
+++ b/lib/ohai/application.rb
@@ -18,9 +18,9 @@
 require "chef-config/path_helper"
 require "chef-config/workstation_config_loader"
 require_relative "../ohai"
-require_relative "log"
+require_relative "log" unless defined?(Ohai::Log)
 require "mixlib/cli" unless defined?(Mixlib::CLI)
-require "benchmark"
+require "benchmark" unless defined?(Benchmark)
 
 # The Application class is what is called by the Ohai CLI binary. It handles:
 #  - CLI options and attribute arguments
diff --git a/lib/ohai/log.rb b/lib/ohai/log.rb
index 6cf0ec2e..44e4daa3 100644
--- a/lib/ohai/log.rb
+++ b/lib/ohai/log.rb
@@ -16,7 +16,7 @@
 # limitations under the License.
 #
 
-require "mixlib/log"
+require "mixlib/log" unless defined?(Mixlib::Log)
 
 module Ohai
   # the Ohai Logger which is just Mixlib::Log defaulting to STDERR and :info level
diff --git a/lib/ohai/mixin/os.rb b/lib/ohai/mixin/os.rb
index f4d4dd9f..44b790be 100644
--- a/lib/ohai/mixin/os.rb
+++ b/lib/ohai/mixin/os.rb
@@ -17,7 +17,7 @@
 # limitations under the License.
 #
 
-require "rbconfig"
+require "rbconfig" unless defined?(RbConfig)
 
 module Ohai
   module Mixin
diff --git a/lib/ohai/plugins/aix/network.rb b/lib/ohai/plugins/aix/network.rb
index c0d5fb77..de9dd101 100644
--- a/lib/ohai/plugins/aix/network.rb
+++ b/lib/ohai/plugins/aix/network.rb
@@ -19,7 +19,7 @@
 #
 
 Ohai.plugin(:Network) do
-  require "ipaddr"
+  require "ipaddr" unless defined?(IPAddr)
   require_relative "../../mixin/network_helper"
 
   provides "network", "counters/network", "macaddress"
diff --git a/lib/ohai/plugins/aix/uptime.rb b/lib/ohai/plugins/aix/uptime.rb
index 470429ce..11840d88 100644
--- a/lib/ohai/plugins/aix/uptime.rb
+++ b/lib/ohai/plugins/aix/uptime.rb
@@ -21,7 +21,7 @@ Ohai.plugin(:Uptime) do
   provides "uptime", "uptime_seconds"
 
   collect_data(:aix) do
-    require "date"
+    require "date" unless defined?(DateTime)
     # below we're going to assume that PID 1 is init (this is true 99.99999% of the time)
     # output will look like this
     # 1148-20:54:50
diff --git a/lib/ohai/plugins/cloud.rb b/lib/ohai/plugins/cloud.rb
index 45e5f8c5..d6df2571 100644
--- a/lib/ohai/plugins/cloud.rb
+++ b/lib/ohai/plugins/cloud.rb
@@ -320,7 +320,7 @@ Ohai.plugin(:Cloud) do
   end
 
   collect_data do
-    require "ipaddr"
+    require "ipaddr" unless defined?(IPAddr)
 
     @cloud_attr_obj = CloudAttrs.new
 
diff --git a/lib/ohai/plugins/cpu.rb b/lib/ohai/plugins/cpu.rb
index a33084de..3569935e 100644
--- a/lib/ohai/plugins/cpu.rb
+++ b/lib/ohai/plugins/cpu.rb
@@ -377,7 +377,7 @@ Ohai.plugin(:CPU) do
   end
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
 
     cpu Mash.new
     cores = 0
diff --git a/lib/ohai/plugins/docker.rb b/lib/ohai/plugins/docker.rb
index 6bea2ace..421c7243 100644
--- a/lib/ohai/plugins/docker.rb
+++ b/lib/ohai/plugins/docker.rb
@@ -16,7 +16,7 @@
 #
 
 Ohai.plugin(:Docker) do
-  require "json"
+  require "json" unless defined?(JSON)
 
   provides "docker"
   depends "virtualization"
diff --git a/lib/ohai/plugins/ec2.rb b/lib/ohai/plugins/ec2.rb
index 82064365..6aa262f1 100644
--- a/lib/ohai/plugins/ec2.rb
+++ b/lib/ohai/plugins/ec2.rb
@@ -82,7 +82,7 @@ Ohai.plugin(:EC2) do
   # @return [Boolean] do we have a Xen Identifying Number or not?
   def has_ec2_identifying_number?
     if RUBY_PLATFORM.match?(/mswin|mingw32|windows/)
-      require "wmi-lite/wmi"
+      require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
       wmi = WmiLite::Wmi.new
       if /^ec2/.match?(wmi.first_of("Win32_ComputerSystemProduct")["identifyingnumber"])
         logger.trace("Plugin EC2: has_ec2_identifying_number? == true")
diff --git a/lib/ohai/plugins/filesystem.rb b/lib/ohai/plugins/filesystem.rb
index 77b77bad..85eb6ad7 100644
--- a/lib/ohai/plugins/filesystem.rb
+++ b/lib/ohai/plugins/filesystem.rb
@@ -718,7 +718,7 @@ Ohai.plugin(:Filesystem) do
   end
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
     require_relative "../mash"
 
     fs = merge_info(logical_info, encryptable_info)
diff --git a/lib/ohai/plugins/gce.rb b/lib/ohai/plugins/gce.rb
index f8c30b32..db336dfe 100644
--- a/lib/ohai/plugins/gce.rb
+++ b/lib/ohai/plugins/gce.rb
@@ -49,7 +49,7 @@ Ohai.plugin(:GCE) do
   # @return [Boolean] Are the manufacturer and model Google?
   def has_gce_system_info?
     if RUBY_PLATFORM.match?(/mswin|mingw32|windows/)
-      require "wmi-lite/wmi"
+      require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
       wmi = WmiLite::Wmi.new
       computer_system = wmi.first_of("Win32_ComputerSystem")
       if computer_system["Manufacturer"] =~ /^Google/ && computer_system["Model"] =~ /^Google/
diff --git a/lib/ohai/plugins/hostname.rb b/lib/ohai/plugins/hostname.rb
index f4f95054..177cfcad 100644
--- a/lib/ohai/plugins/hostname.rb
+++ b/lib/ohai/plugins/hostname.rb
@@ -27,7 +27,7 @@
 
 Ohai.plugin(:Hostname) do
   require "socket" unless defined?(Socket)
-  require "ipaddr"
+  require "ipaddr" unless defined?(IPAddr)
 
   provides "domain", "hostname", "fqdn", "machinename"
 
@@ -161,7 +161,7 @@ Ohai.plugin(:Hostname) do
   end
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
     require "socket" unless defined?(Socket)
 
     wmi = WmiLite::Wmi.new
diff --git a/lib/ohai/plugins/kernel.rb b/lib/ohai/plugins/kernel.rb
index 7dc273fa..0b106026 100644
--- a/lib/ohai/plugins/kernel.rb
+++ b/lib/ohai/plugins/kernel.rb
@@ -252,7 +252,7 @@ Ohai.plugin(:Kernel) do
 
   collect_data(:windows) do
     require "win32ole" unless defined?(WIN32OLE)
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
 
     WIN32OLE.codepage = WIN32OLE::CP_UTF8
 
diff --git a/lib/ohai/plugins/linux/network.rb b/lib/ohai/plugins/linux/network.rb
index 7d0d2de8..b38df361 100644
--- a/lib/ohai/plugins/linux/network.rb
+++ b/lib/ohai/plugins/linux/network.rb
@@ -577,7 +577,7 @@ Ohai.plugin(:Network) do
   # If the 'ip' binary is available, this plugin may set {ip,mac,ip6}address. The network plugin should not overwrite these.
   # The older code section below that relies on the deprecated net-tools, e.g. netstat and ifconfig, provides less functionality.
   collect_data(:linux) do
-    require "ipaddr"
+    require "ipaddr" unless defined?(IPAddr)
 
     iface = Mash.new
     net_counters = Mash.new
diff --git a/lib/ohai/plugins/network.rb b/lib/ohai/plugins/network.rb
index c1b15ced..74990bea 100644
--- a/lib/ohai/plugins/network.rb
+++ b/lib/ohai/plugins/network.rb
@@ -17,7 +17,7 @@
 #
 
 Ohai.plugin(:NetworkAddresses) do
-  require "ipaddress"
+  require "ipaddress" unless defined?(IPAddress)
   require_relative "../mixin/network_helper"
   include Ohai::Mixin::NetworkHelper
 
diff --git a/lib/ohai/plugins/packages.rb b/lib/ohai/plugins/packages.rb
index f9653dbf..098a3126 100644
--- a/lib/ohai/plugins/packages.rb
+++ b/lib/ohai/plugins/packages.rb
@@ -79,7 +79,7 @@ Ohai.plugin(:Packages) do
       end
 
     when "arch"
-      require "date"
+      require "date" unless defined?(DateTime)
 
       # Set LANG=C to force an easy to parse date format
       so = shell_out("LANG=C pacman -Qi")
diff --git a/lib/ohai/plugins/rackspace.rb b/lib/ohai/plugins/rackspace.rb
index ccec304f..3f4e8339 100644
--- a/lib/ohai/plugins/rackspace.rb
+++ b/lib/ohai/plugins/rackspace.rb
@@ -50,7 +50,7 @@ Ohai.plugin(:Rackspace) do
   def has_rackspace_manufacturer?
     return false unless RUBY_PLATFORM.match?(/mswin|mingw32|windows/)
 
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
     wmi = WmiLite::Wmi.new
     if wmi.first_of("Win32_ComputerSystem")["PrimaryOwnerName"] == "Rackspace"
       logger.trace("Plugin Rackspace: has_rackspace_manufacturer? == true")
diff --git a/lib/ohai/plugins/root_group.rb b/lib/ohai/plugins/root_group.rb
index ea1af938..28dba9bb 100644
--- a/lib/ohai/plugins/root_group.rb
+++ b/lib/ohai/plugins/root_group.rb
@@ -19,7 +19,7 @@ Ohai.plugin(:RootGroup) do
   provides "root_group"
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
 
     wmi = WmiLite::Wmi.new
     # Per http://support.microsoft.com/kb/243330 SID: S-1-5-32-544 is the
diff --git a/lib/ohai/plugins/shard.rb b/lib/ohai/plugins/shard.rb
index 259bdc6b..cf7641b0 100644
--- a/lib/ohai/plugins/shard.rb
+++ b/lib/ohai/plugins/shard.rb
@@ -94,7 +94,7 @@ Ohai.plugin(:ShardSeed) do
   end
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
     wmi = WmiLite::Wmi.new
 
     create_seed do |src|
diff --git a/lib/ohai/plugins/uptime.rb b/lib/ohai/plugins/uptime.rb
index 5883f13c..dafdfaea 100644
--- a/lib/ohai/plugins/uptime.rb
+++ b/lib/ohai/plugins/uptime.rb
@@ -84,7 +84,7 @@ Ohai.plugin(:Uptime) do
   end
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
     wmi = WmiLite::Wmi.new
     last_boot_up_time = wmi.first_of("Win32_OperatingSystem")["lastbootuptime"]
     uptime_seconds Time.new.to_i - Time.parse(last_boot_up_time).to_i
diff --git a/lib/ohai/plugins/windows/dmi.rb b/lib/ohai/plugins/windows/dmi.rb
index eea5b37f..d0d6cdd8 100644
--- a/lib/ohai/plugins/windows/dmi.rb
+++ b/lib/ohai/plugins/windows/dmi.rb
@@ -46,7 +46,7 @@ Ohai.plugin(:DMI) do
 
   collect_data(:windows) do
     require "ohai/common/dmi"
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
     wmi = WmiLite::Wmi.new
 
     dmi Mash.new
diff --git a/lib/ohai/plugins/windows/drivers.rb b/lib/ohai/plugins/windows/drivers.rb
index 425d33dc..d9fb41fc 100644
--- a/lib/ohai/plugins/windows/drivers.rb
+++ b/lib/ohai/plugins/windows/drivers.rb
@@ -22,7 +22,7 @@ Ohai.plugin(:Drivers) do
   collect_data(:windows) do
     if configuration(:enabled)
 
-      require "wmi-lite/wmi"
+      require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
 
       kext = Mash.new
       pnp_drivers = Mash.new
diff --git a/lib/ohai/plugins/windows/memory.rb b/lib/ohai/plugins/windows/memory.rb
index e0bb46f0..b8bd84a1 100644
--- a/lib/ohai/plugins/windows/memory.rb
+++ b/lib/ohai/plugins/windows/memory.rb
@@ -17,7 +17,7 @@ Ohai.plugin(:Memory) do
   provides "memory"
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
 
     memory Mash.new
     memory[:swap] = Mash.new
diff --git a/lib/ohai/plugins/windows/network.rb b/lib/ohai/plugins/windows/network.rb
index d44d6079..2b8fdd62 100644
--- a/lib/ohai/plugins/windows/network.rb
+++ b/lib/ohai/plugins/windows/network.rb
@@ -118,7 +118,7 @@ Ohai.plugin(:Network) do
 
   collect_data(:windows) do
 
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
 
     iface = Mash.new
     iface_config = Mash.new
diff --git a/lib/ohai/plugins/windows/virtualization.rb b/lib/ohai/plugins/windows/virtualization.rb
index 0ce24418..0ed73d60 100644
--- a/lib/ohai/plugins/windows/virtualization.rb
+++ b/lib/ohai/plugins/windows/virtualization.rb
@@ -24,7 +24,7 @@ Ohai.plugin(:Virtualization) do
   include Ohai::Mixin::DmiDecode
 
   collect_data(:windows) do
-    require "wmi-lite/wmi"
+    require "wmi-lite/wmi" unless defined?(WmiLite::Wmi)
 
     virtualization Mash.new unless virtualization
     virtualization[:systems] ||= Mash.new
diff --git a/lib/ohai/runner.rb b/lib/ohai/runner.rb
index 5961a2cf..c5039813 100644
--- a/lib/ohai/runner.rb
+++ b/lib/ohai/runner.rb
@@ -18,7 +18,7 @@
 #
 
 require_relative "dsl"
-require "benchmark"
+require "benchmark" unless defined?(Benchmark)
 
 module Ohai
   class Runner
diff --git a/lib/ohai/util/ip_helper.rb b/lib/ohai/util/ip_helper.rb
index f22c4fdd..22657867 100644
--- a/lib/ohai/util/ip_helper.rb
+++ b/lib/ohai/util/ip_helper.rb
@@ -14,7 +14,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-require "ipaddress"
+require "ipaddress" unless defined?(IPAddress)
 
 module Ohai
   module Util